Important notice regarding fit & function of the Ruger 10 round magazine
FITMENT
Our 2nd generation of the 10 round magazine for 44 Magnum Ruger carbines is comprised of a 33% glass filled nylon injection-molded body with a stainless steel feed lip and aluminum base plate. We have torture tested this design by driving back and forth over a magazine with a truck, slamming it against a concrete floor without any damage to the magazine. Considering our own experience, and feedback from our customers, we have discovered that dimensional differences exist from one Ruger rifle to another by as much as 15 to 20 thousandths of an inch, primarily in the magazine cutout in the wood or synthetic stock. In a majority of the guns out there our mags fit just fine, but in a small percentage of guns the mags may be too tight and slight adjustments must be made to the mag well opening in the stock with a file or Dremel tool. If you have any fitment issues in your gun with our magazine please contact us first if you need any assistance with resolving the issue.
FUNCTION
Optimal cartridge overall length for use in our magazine is between 1.560” to 1.625” O.A.L. When fully loaded the magazine spring exerts substantial force on the top two rounds in the magazine. When the fully loaded mag is place in the gun’s mag well on a closed bolt it pushes down on the top cartridge forcing the nose of the bullet down. With cartridges of the correct O.A.L this does not create a feeding issue for the top two rounds in the mag. But with cartridges shorter than 1.56” pushing the nose down can cause the shorter cartridge to move forward enough in the magazine allowing the top two rounds in the magazine to lock rims together and prevent them from feeding into the chamber. I personally have successfully shot 44 special rounds with our magazine but it typically requires a fully loaded magazine (10 rounds) to be inserted in the gun’s mag well with the bolt open, then closing and chambering the first round. The remaining 9 rounds feed properly after that. Rim locking typically only happens to round 9 and 10 (the top two) with short cartridges. Lastly using our magazine in the Ruger 99/44 Deerfield semi-auto carbine you need to pay special attention to the tightness of the rear screw holding with trigger assembly to the receiver. Due to the pounding the receiver takes from the reciprocating bolt the screws will loosen over time and any movement between the trigger housing and the stock will cause the magazine to fall out during firing.
Things we learned from testing the new 10 round magazine:
Ruger 77/44 bolt gun… other than the rare tight stock fitment issue and considering how many years the 77/44 has been in production overall reliability of the 10 round mag in this platform is 99+ percent.
Ruger 96/44 Lever gun… fit and feeding in the 96/44 is flawless. Due to the relatively narrow ejection port opening in the receiver some guns have difficulty ejecting spent cases with our magazine; our own 96/44 had that issue. We resolved the problem with a simple fix (which we send you the part free) that is described in a blog post on our website.
Ruger 99/44 Deerfield… the best I can do here is relate to you our experience with our Deerfield shop gun. While it fits and feeds nicely for 8-9 of the 10 rounds, the last round does not always come up fast enough and the bolt rides over the top of it. We surmise that this has to do with the return bolt velocity being so high that there is not enough magazine spring pressure to present the last round fast enough to be picked up and chambered. Your results may vary, dependent on your gun and the ammo you use. We tell you all this so you can make an informed decision as to whether or not to purchase this magazine. We are continuing to test and trial this, looking for a more permanent solution.
By all means, please check the function of our magazine in your firearm, with your preferred ammunition, before heading to the field.
Warranty and returns
We do offer a 1 year manufacturer’s warranty for defects in materials and workmanship. If you have any issues with the fit or function of our magazines please contacts us initially at ma**@*********ns.com and leave a phone number so we can contact you when we are not working in the noisy shop environment. If for some reason we are not able to work out a problem (magazine related, not gun related) with you we will accept returns only if the magazine is in “new” condition but you will need a return authorization number and you will pay return shipping.
